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    <title>Document</title>
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    <script>
        // promise三种状态  pending fulfilled rejected

        //penging 待定 PromisrState
        var p = new Promise((resolve,reject)=>{

        })
        console.log(p);

        var f = new Promise((resolve,reject)=>{
            resolve(10)
        })
        console.log(f);
    </script>
</body>
</html>